Белкин, В. А., “CYCLES OF MACROECONOMIC INDICATORS AND SOLAR ACTIVITY: MECHANISM AND FACTS OF STRONG STABLE RELATIONS (1867-2014 YEARS)”, Статьи, Социум и власть, 53/3 (2015), 90-8, https://socium-vlast.owebs.ru/article/view/28221, accessed 8 Nov. 2026.